Question

Air is all round us．It is around us___31____we walk and play．From the time we are born，air is around us on every side．When we sit down，it is around us．When we go to bed．air is  32 around us．We live  33 air．

All living things  34 air．Living things cannot live  35  air．We can live without any water for  36 days，but we cannot live for more   37 a few minutes without air．When we are working  38 running，we need more air．When we are asleep，we need less air

We live in air but we cannot see it．We can only feel it．We can feel it when it is  39 ．  Moving air  40 wind．  

1.	A．if B．because C．when D．what

2.	A．too B．also C．either D．yet

3.	A．with B．by C．in D．around

4.	A．need B．hope C．want D．1ike

5.A．have      B．have no    C，with       D．without

6.	A．little B．a Iittle C．few D．a few

7.	A．about B．over C．than D．then

8.	A．or B．and C．so D．but

9.	A．moving B．standing C．stopping D．sleeping

10.	A．is 1ike B．1ikes C．calls D．is called

Answer

1.C

2.B

3.C

4.A

5.D

6.D

7.C

8.A

9.A

10.D

【解析】本文主要讲述的是空气在我们周围无处不在以及空气的重要性。

1.句意：当我们走路或玩的时候，空气在我们周围。故选C .

2.句意：当我们上床睡觉的时候，空气也在我们周围。故选B。

3.指我们生活在空气中，故选C。

4.根据句意这里指需要空气，故选A。

5.句意：没有空气生物不能生存。故选D。

6.这里指一些天，故选D。

7.固定短语more than ,故选C。

8.这里指或者选or 。

9.根据下文暗示，指流动的空气，故选A。

10.固定短语be called 被叫做。。。。。。